具嵌入式 Web Server 的 ZigBee 網路之實現

近年來，無線網路發展非常快速，已經在人們的日常生活中佔有一席之地，目前已經有IEEE 802.11n產品上市，速度可高達300Mbps，已經可以滿足絕大多數的需求，因而慢慢使用者希望將網路觸角從電腦延伸到所有的設備，也就是ubiquitous網路的概念出現。與其它著重於高速的無線網路不同，ubiquitous網路需要的是低速、低功耗與低成本，因而一個新的標準被制定出來，也就是IEEE 802.15.4，ㄧ般稱為”低速率無線個人網路”(LR-WPNs)，但是這個標準只定義了MAC與PHY這兩層。目前推廣低速率無線個人網路最重要的單位是Zigbee聯盟，其增加了網路層與應用層，讓所有的廠商可以在設計產品的時候有規範可以遵守，而目前市面上也有不少實驗的平台在販售，但是這些平台皆並無支援遠端控制功能，故本系統配合ZigBee技術開發一種透過網頁方式監控遠端ZigBee網路的監控系統，使用者可透過網頁立即得知ZigBee網路即時的狀態，此外本系統可透過網頁直接對系統中任意節點設定Binding連線，不需在各節點上操作可直接透過網頁新增Binding設定，所以使用者可以在網際網路上任何地方透過電腦的瀏覽器來操作這個Zigbee網路。

關鍵字

低速率無線網路； Zigbee ；嵌入式系統； ubiquitous網路

並列摘要

In the recent years, wireless networks are widely deployed and play a significant role in our daily life. Nowadays users can purchase new IEEE 802.11n products in the market. The data rate is up to 300 Mbps and can meet the requirement of majority users. Then users expect that networks can be extended to cover all equipments in addition to computers. Therefore, the concept of “ubiquitous” networks is proposed. Different to the requirement of high speed network， ubiquitous networks focus on low-speed, low-power, and low cost and a new standard IEEE 802.15.4 is defined to meet the new requirement. Zigbee alliance is a organization to promote the low rate wireless networks. It defines the network and application layers on top of IEEE 802.15.4 PHY and MAC such that all system manufacture can follow. There are already some Zigbee general-purpose experiment platforms in the market, but they don’t support to remote control. So we designed a ZigBee network with Web server in an ARM-based embedded system. Users on the Internet can remotely monitor and control the ZigBee network.

並列關鍵字

low-rate wireless networks ； Zigbee ； Embedded system ； ubiquitous networks

參考文獻

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[1] IEEE,“Part 15.4: Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications for Low-Rate Wireless Personal Area Networks (WPANs)”,2006.